Het ontstaan van het slakkenhuis, naaktslakken en waarin slakkensporen van elkaar verschillen

The author reports the daily news of her snailery: She watched the development of newly laid eggs into little snails and sees the beginning of their houses from a piece of the eggshell. She describes the quick development of two little yellowish slugs into big, fat Arion rufus. Slugs and snails absolutely ignore each other! She observes the differences in the traces of snails and slugs and finds why they are different.